Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh hoa » trinh do, trinh han
lang cong » dang cong, bang cong, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
hoa lang » hoa dan, hoa van
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - canh trinh hoa lang cong dan phan tu~.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - canh trinh hoa lang cong dan phan tu*.